Heel attaching machines



Feb. 2, 1965 c. E. ROGERS, JR 3,

HEEL ATTACHING MACHINES Filed Dec. 7, 1962 8 Sheets-Sheet 1 I n van forChester E. Foyerql .5 his 95 w, LA

Feb. 2, 1965 c. E. ROGERS, JR 3,167,781

HEEL ATTACHING MACHINES Filed Dec. 7, 1962 a Sheets-Sheet 2 Feb. 2, 1965c. E. ROGERS, JR 3,167,781

HEEL ATTACHING MACHINES Filed Dec. 7, 1962 8 Sheets-Sheet 3 HEELATTACHING MACHINES Filed Dec. 7, 1962 8 Sheets-Sheet 4 Feb. 2, 1965 c.E. ROGERS, JR

HEEL ATTACHING MACHINES 8 Sheets-Sheet 6 Filed Dec. '7, 1962 Feb. 2,1965 c. E. ROGERS, JR-

HEEL. ATTACHING MACHINES Filed Dec. '7, 1962 8 Sheets-Sheet 7 of a shoethereon.

United States Patent 3,167,781 FEEL ATTACHING MAC ES Chester E. Rogers,In, Beverly, Mass, assignor to United Shoe Macery Corporation,Flemington, NJ., a corporation of New Jersey Filed Dec. 7, 1962, Ser.No. 242,942 14 Claims. (Cl. 1--335) This invention relates to machinesemployed for the attachment of a heel to a shoe of the type illustratedand described in United States Letters Patent No. 2,428,047, grantedSeptember 30, 1947, to John F. Standish, and,

more particularly, to the increased automation of such tion resultednotonly in improper nailing but also in pos- V sible breakage of thedriving spindle due to the misalignment of the operative members.Further, the heel would not be securely held in the correct position onthe shoe as a result of the incompatible positioning of the worksupporting member and the holddown means. The operator was additionallyrequired to initiate the movement of the holddown means into operativelocation while physically retaining the shoe and heel thereon inposition on the supporting jack, this step occurring subsequent toshifting said jack into operative position.

Accordingly, the principal object of the present invention is to providea fully automatic heel attaching machine which requires only that theoperator initially place a shoe and heel to be secured thereto inposition and initiate and maintain the sequential positioning of certainmembers of the machine in operative location by the depression of anactuating treadle. The operator is thereby relieved of the tiring andtime-consuming operations noted above and, consequently, the efficiency,consistency, and

accuracy of the machine are increased. The operator is given completecontrol of the sequential movement of the members of the machine intooperative positions and of the actual insertion of the securing deviceand, therefore, is able to stop the machine if one of the members is notproperly located.

A correlative object to that noted above is to provide means forautomatically shifting the work supporting member or jack from a workreceiving position to an operative position whereby certaininstrumentalities of the machine are placed in position to facilitatethe insertion of a securing device.

A further object of this invention is to provide a pivotal worksupporting jack which can be located in a workreceiving position whichfacilitates the positioning To-this end and in accordance with a featureof this invention, there is provided a heel attaching machine havingmeans for. automatically shifting the work supporting member or jackfrom a work receiving position to an operative position, means forautomatically positioning the holddown device in position to engage theheel of a shoe mounted on said jack in response to the presence of saidjack in operative position, means for.

moving the holddown device into engagement with said heel, and means forinserting a nail through the heel seat of the shoe into the heelpositioned thereon.

The above and other features of the invention, together with variousnovel details of construction and combinaice tions of parts, will now bemore particularly described in connection with an illustrative machinein which the invention is embodied and with reference to theaccompanying drawings thereof in which:

FIG. 1 is a view in front elevation of a machine exemplifying theinvention, certain frame portions being out way to reveal internalmechanisms;

FIG. 2 is an enlarged view, partly in'section, of the nail drivinginstrumentalities;

FIG. 3 is a view in side elevation of the machine illustrated in FIG. 1,certain frame portions being cut away to reveal internal mechanisms; 1FIG. 4 is a view in side elevation showing the jack in the workreceiving position taken along the line IV-IV of FIG. 1;

FIG. 5 is a view in side elevation showing in operative position;

FIG. 6 is a view of certain of the positioning means showing thelocation thereof when the jack is in operative position;

FIG. 7 is a view inside elevation showing the relative location of theoperative members during the insertion of a nail;

FIG. 8 is a view of certain of the positioning means showing thelocation thereof when the hood is in engagement with a heel;

FIG. 9 is an enlarged view of the cam rods showing the position thereofin the operative position;

FIG. 10 is a view in side elevation, partly in section, of a jack havinga shoe thereon mounted on a last having a spindle receiving passagedisposed at an angle to the last pin receiving thimble;

the jack FIG. 11 is an enlarged view of the spindle and mount-- ingmeans therefor showing a sleeve on said spindle;

' FIG. 12 is a plan view of the jack in the work receiving position;

FIG. 13 is an enlarged view, partly in section, of the spindle and themounting means therefor taken along the line XIII-XI1I of FIG. 12;

FIG. 14 is a view in perspective, partly in section, showing certain ofthe spindle support means;

- FIG. 15 is a sectional view taken along the line XV-XV of FIG. 12;

FIG. 16 is a view of the cam rods and spindle mounting in the workreceiving position; and

FIG. 17 is a diagrammatic view of the fluid system.

The frame of the machine comprises a base portion 10 and a housing 12secured to said base portion. A hood or head 14 is mounted on thehousing 12 for movement relative to nail inserting instrumentalities, ashereinafter described.

The illustrated machine is hereinafter described with reference to theattachment of a heel 16 (FIGS. 4, 5, 7 and 10) to a shoe 18 by the useof a drive screw or A work supporting member or jack 22 (FIGS. 1, 3, 4,

7, 10 and 12) is pivotally mounted on the upper portion of the housing12 by means of rods 24, 24 (FIG. 15)

mounted in bearings 26, 26 secured to the housing 12 and extending intoa carrier 28 upon which the jack 22 is carried, said rods being retainedin position in the carrier by set screws 30, 30. The carrier 28 extendsrearwardly from the pivot point determined by the rods 24, 24 and hasdrive means attached to the rearward portion thereof,

as hereinafter described. The jack is thus pivotal about the bearings26, 26 between an upper work'receiving position and an operative.position. When the jack is located in its workreceiving position, asillustrated in F183. 1, 3 and 4, positioning. of a last 49 thereon iseasily accord plished as a result of the operators ready access thereto.

- The work supporting member 223 comprises a hollow 'spindlefiz andmeans forcarrying. the same, a mount dd, meansfor locking the spindleagainst movement and for permitting movement of the mount when the iacl;is in the last receiving position, andrneansresponsive to the movementof thejacl: from the worlc receiving position to the operative positionfor freeing the. spindle and restraining the mount. The spindle and themountings therefor are carried on the carrier. 2S and extend through acentral j cavity therein.

An upstanding housing portion 45 of the carrier s V projectingrearwardly therefrom a pair of spaced flanges.

46, 46 forming abutments' for a guide block 48 (hit;

4). extending through a slot 114 in the wallet the spindle and lying ina keyway llle extending longitudinally along 3, 4', 5, 7, 10, 11, 13, 14andl6) which'isjournaledon" a a pair-of bearing pins 50', 5% extendingthrough the car rier 218 (FIG. 13 on opposite sides thereof and retainedin position therein by ,set screws 52,52. The guide block.

7 48 extends through the cavity in the carrier and has a CYilI'ldIlCflibOlB' or guideway 54 extending longitudinally thereof. .The guide blockhas a pair of recesses 55, 56a (FIGS. 5, 10, 13 and 16) adaptedfittingly to receive an end 1 of a plunger so which is slidingly mountedina guideway- 62, (FIG. 13) in one of thefianges as of the carrier 28and is constantly urged inwardly by a spring 64. The angularsetting ofthe guide bloclc' 53 upon the carrier 28 about the common-axis of thebearing pins 59', Eli may be quickly effected by the engagementof theplunger otlwith one orfthe other'ofthe recesses or 56a; The spindle 5?.is slidable in the guideway 54 and,

As more fully. described in the aforementioned patent, this facilitatesthe adaptation of the work support member to accommodate lasts havingpassageways extending throughthe last at different angles to the generalplane of the rim of the heel plate" or.

the last.

v A'driver it? is mounted in the; hollow spindle 42 for V reciprocation.v,The spindle 42 comprises upper and lower cylindrical portions'72, '74-of relatively small and large diameter and a beveled portionfdjoiningsaid upper and lower cylindrical portions. The spindle 42 is adapted tofit slidingly in a passag'efis ina last '79 positioned rearposed atanangle thereto, as illustrated in FIG. 10, and

Adjustment ofthe' foot 840m the spindle d2 permits the upper extremityof the spindle to be located at the proper height to support the, shoeon the last in a definiteirelav tion to the driver 79. Y a Asillustrated in FIG. 4, the spindle {i2 is sometimes inserted into apassage .88 formed by a lastv pin receiving thirnble 9d and an extensionthereof in a last of the type designated byzthe reference The passage 83COITHHOH. 'ly has a slightly greater diameter than the passage 7-? inthe last '79. In operating upon a shoemounted on the last 4l),-a sleeve92 (1 165.3, 4, 5, 7, 11, 1 3 and 16) :is'

. mounted on the upper.cylindricalportion72 of thespindle V 42 and hasaflanged'lowerend 94.

7 When the flanged lower end Q4 of the sleeve 92'engages the upperendjof the 4-8 and to a foot screw or naillZh to the proper depthintotn- V shoe is. Downwardv displacement of the driver "it? ina til ,1

position on the spindle 42 there is provided alatch in the 'form ofa-lever, lltlll wh is journaled a pin 1% cured to the'blocl; 48 andhas-its upper end overlying toe flanged lower end 94 of the sleeveQAspringfliid, opposite ends of which are. housed in recesses in the block4 3 and in the 1ever1l,.constantly biasestheupperend of the lever to itsoperating position overthe flanged lower end 94 of the'sleeve 92. Y VThe driver ill, during a stroke thereof, sinks the drive insole or" thepassage ltil'of the spindle is limited by a key 112 (El-G.

the lower portion of the driver. The key 112 lies in a recess 318 whichis formed in the guide block 4-3 and has formed in it a'verticalslotthroughwhich passes screws "122' which are threaded into the guide blockand normally force the icy against the bottomjof the'recess 1'18tosecure said key in adesired positionion the guide 1 block initialadjustmentof the key 112 liS effected to vary. the starting position ofdriver 7t for'the accent modation of drive's'crews ornails of differentlengths.

When the carrier 28 and, therefore, the work support-' ing member orjack 22' are located in the upper work receiving position, the spindle42 is fixed against depres: sion by the engagement of a studlfill (FIG.13) located in'the foote l'by a hook-shaped extension 13.2 of a pivotalblock 134 (P1689,- 13,.14 and 116) 1n'ountedon;one of the bearing pinsdtlinterposed between. a portion ofthe carrierfifi and the guide.block;d&. Th'eblock 134has a I ca-mf'surface '136 located on anextension thereof disposed thus, the. relative position thereof withrespect to the 1 V mountdd can be determinedby adjustment of the angularsetting of the guide block 48.

wardly of the-usuallast'pin receiving thiinble and dison the oppositeside of thepiv'ot pointdetermined by'the bearing pin 5% from thehook-shaped extension 132.

When the jack 22 pivoted mtooperative position by the drive means, ashereinafter, described, the'hoo'k-shaped extension 132 or the block .134is. pivoted out of contact withthe stud 139 by a rod 138 slidinglymounted onthe carrier 23 in mounting members 1449, 142 and engageable Qat opposite ends'thereof with the cam surface lfit'r'on the block11:54am a cam plate ld'dmounted onthe hood 14. I The hook 132isnOrInallyretainedin cbntactwith the stud 33%, when located in the,work receiving position as illustrated in FIG. ldibyaispfing15itopposite, ends of whichare, attachedto a stud 352 secured to the'top. of the block 1349.116 .to 'a stud 154 secured to. the mountingmember 146. 1111610511133 contacts the cam-plate 1 3% during the.pivotal movement oi the carrier'into operative positiondue; to thearcuate path followed by thecarrier' and the members thereon and the endthereof in contact; with the cam" surface '133 is'urged outwardlyrelative to' the carn 'plate lid-t thereby releasing the-studlifltl'fro'm' the hook 132 when the jack is; in operative position, asillustrated in FIG. 9. v t 5 Q pression'of the: spindle 4211's limitedbyjhe contact of a stud 16:? mounted in the foot 34 with the lowersurface of a-slot 1673 cut in a block 11% mounted onfone..-of thecarrier 28 is a vertical cylinder in which operates a bevel portion 76of the'spindlei 42 the upper endgof the sleeve is flush with the upperend of the spindle,-tlie out- 2 side diameter. of the sleeve beingsuchthat it fits slidingly'j inlthe passageriltl of the last 46.

In order to insure than thesleeve 2is held'in its proper bearing' pins5t) interposedbetween a portiono the car-1. rier 28 and the guide blockifdlonthe' opposite'sideof the guide block 43 fronrthegblocl; 134;?Asstated above, the foot 554 and spindle t-z are urged upwardly byithespring andnormally retained in'an upperjposition thereby.

Formed in the upstandinghousing portion .45 ofithe tubular piston 17!}having at its-upper end an enlargement provided with asphericaldepressionjli fi shapedto reeeiveacomplem'entalilowersurface.of a;bed piece 174 having a planar upperface adapted to support the last by contact withlthe crown oruppersurface of the back I cone thereof The lower portion of' theeylinderidfi'is' closed by the plate 176 secured thereto, Thebed piece174, the: cylinder 168 andftheapiston 17d collectively constitutethe-mount -dd. .Depression .ofa holddown When the carrierlg' isintheoperative positionydtea heel of a shoe mounted on the jack 22 initiallycauses the bed piece 174 to tilt to the proper angular position and thenafter clamping pressure is applied to the bed piece, as hereinafterdescribed, to be held against displacement on the piston 170 due to thespherical shape thereof.

The bed piece 174 has a radial slot 182 (FIG. through which the spindlemay pass in certain angular positions. The piston 170 and the bed piece174 are normally urged upwardly by a pair of expansion springs 184surrounding rod 186 which are secured to the upper end of the piston1'70 and pass through bores 188 in the carrier 28. Upward movement ofthe piston 170 is limited by contact of nuts threaded onto the rods 186with the underside of the carrier 28. The piston 17d and, therefore, thebed piece 174- are freely movable in the cylinder 168 when the jack 22is in the work receiving position thereby permitting adjustment of alast on the spindle and bed piece. 1

In order to insure that the portion of the crown of the back cone of thelast 40 or 79 overlying the slot 182 of the bed piece is effectivelysupported there is provided a slide plate 190 which is movable along aforwardly and rearwardly undercut guideway 192 in the planar upper faceof the bed piece and which has formed in it a hole 194 through which thespindle 42 passes freely. In accommodating the last '79 the bed piece174 may be initially oriented slightly on the tubular piston 170, theupper face of the'bed piece during such orientation being inclinedslightly downwardly and rearwardly from the horizontal. The bed piece174 is provided at its forward lateral portions with flanges 196 whichare normally in engagement with the flanged upper face of the tubularpiston, the upper face of the bed piece at this time being horizontal.The flanges 1% allow the bed piece 174 to tilt slightly backward fromits horizontal position to accommodate slight variations in the anglesof the last passages and/or irbut prevent the operator from tipping theforward end of the bed piece 174 downwardly thereby preventing suchmovement when the last is removed and ensuring the proper location ofthe bed piece to facilitate positioning of the next last.

The consistent accuracy of the thimble hole 90 and the extension thereofmake it unnecessary to provide an initially tiltable bed piece whenoperating on shoes mounted on lasts of this type and, accordingly, thebed piece may be rigidly secured in its horizontal position to thepiston 170 or may be formed integral with said piston. In theillustrated construction it will be noted that when the spindle 42 is inits vertical position, the vertical axis of the thimble is disposed atasubstantial distance rearward of the vertical axis of the tubular piston1'70 and accordingly downward pressure imparted to the slide plate 1%and to the upper face of the bed piece 174 has a tendency to tilt therear end of the bed piece downwardly against its locking action in thetubular piston 170. With the foregoing in view the rear end of theflanged upper portion of the tubular piston 170 has secured to it byscrews 198 a block 200, thec'onstruction being such that when themachine is adjusted for thimble hole work the slide plate 190 rests uponthe upper surface of the block, the flanges v a valve 240 (FIG. 17).

face of the tubular piston 170. I Accordingly, when oper ating uponthimble hole work the bed piece 174 is fixed against tilting on thetubular piston 170.

The lower end of the piston 170 has secured to it a valve seat 204 in anaxial extension of which a stem of a valve 2% is movable. An expansionspring 208 tends to close the valve 296 and thus the passage through thepiston 170. When this occurs the piston is locked against depression byoil in the cylinder 16%..

When the jack 22 is in its work receiving position, the valve 206 isheld open by a-multipart bell crank lever 210 (FIGS. 12 and 15)fulcrumed on the enlargement of the piston 179, a bifurcated arm, 211 ofthe lever extending between flanges on a stem of the valve 206. The bellcrank lever 219 has a depending arm 212 past which a cam rod 21% movesin contact therewith during the pivotal movement of the carrier 28, saidcam rod being'slidingly mounted on the carrier in mounting members 216,218 and engagea'ole at one end thereof with the cam plate 144 mounted onthe hood 14. The cam rod 214 has an enlarged cam surface 220 mountedthereon on the end opposite that engageable with the cam plate 144. Thecam rod 21 is normally urged to the right as viewed in FIG. 9 relativelyto the arm 212 by a spring 222 interposed be tween the mounting member216 and a collar 224 secured to the cam rod, a terminal position of saidcollar being determined by contact thereof with the mounting member 218.When the carrier 28 is in the work receiving position, the collar 224 isurged into its terminal position and the depending arm 212 of the bellcrank lever 210 engages the enlarged end portion of the cam surface 220which has a greater diameter than the cam rod 21 thereby causing thevalve 206 to be lowered from its seat due to the pivoted position of thebell crank lever. Pivotal movement of the carrier 28 into operativeposition brings the cam rod 214 into contact with the cam plate 144 andthe cam surface 224i is urged out of contact with the arm 212 therebypermitting the spring 268 to close the valve 2%.

The piston 1'70 and the bed piece 174 are thus locked in position whenthe carrier is in the operative position and free to move when thecarrier is in the work receiving position. The alternate positions ofthe arm 212 are illustrated in FIG. 15.

The holddown member may be of the type disclosed in United StatesLetters Patent No. 1,545,575, granted July 14, 1925, to John F.Standish, and application for Letters Patent of the United States SerialNo. 142,172, referenced above, comprising a tread abutment and a backfork operatively connected for cooperative movement. The holddown member18% illustrated in FIGS. 1, 3, 5 and 7 is described in theabove-mentioned application as an alternative design adapted for usewith high style Louis heels. Preparatory to operating upon the work, theholddown member 1819 must be adjusted in relation to the jack 22 toaccommodate the particular style of heel to be attached, said adjustmentbeing made as described in the above-mentioned patent and application.

Pivotal movement of the carrier 28 is controlled by a two-way piston23%) (FIG. 17) housed in a cylindrical housing 232 (FIGS. 3, 4 and 5)mounted on a bracket 233 pivotally secured to a support member 234mounted on the frame 12. The movement of the piston 231i is translatedto the carrier 28 through a piston drive rod 236 pivotally secured tothe rear of the carrier 28. The piston 239 and, therefore, the carrier28 are normally retained in an upper position by fluid pressure appliedto the bottom of the piston 2349 through a line 23% and controlled byDownward displacement of the piston 23% is initiated by depression of atreadle 242 (FIG. 3) pivotally mounted on a cylindrical piston housing244 secured to the base member 149. The treadle 242 is normally retainedin anupper position, as illustrated in FIG. 3, by a spring 246 oppositeends of which are secured to a portion of the treadle displaced from thepivot point thereof and to a bracket 245 mounted on the frame 12. Theupper position of the treadle 242 is determined by contact thereof witha stop screw 24-8 mounted in a bracket 249 secured to the frame 12. Theinitial depression of the treadle 242 releases a valve 259 mounted onthe frame 12, as illustrated in FIG. 6, said valve controlling theintroduction of pressure fluid to the upper portion of the cylinder 232through a line 251. The rate at which the piston 230 is depressed andreturned is regulated by a speed control valve 252.

Movement of the head 14, is controlled by a two-way piston 256 (FIG. 17)housed in a cylindrical housing 258 in' an accumulator.

. which a plunger (FIG, 8) and a one-Way piston 244%; the housingiifiti'being mounted on a drive rod 2:62 secured to the piston 26b. Thehead 1 is slidingiy mount- 269 housed in the housing sas er ed inthe'fraine 12 fOljnOVfiflGili toward and'away' from,

the jack 22, movement being impartedto the head 1 the pistons 256andidt) through a pair of rods 2-54 1) opposite ends of which aresecured to the head at 256, 268 and to lateral extensions 27% of ahousing 2'72 to which a piston drive rod 2'74 of the piston fifiissecured.

The rods 264 are slidingly mounted in support members 276, 278. Thepiston 256 controls the movement of the head between an upper'positionand an intermediate position wherein the holddown member 1% isimmediately above the jack and a shoe thereon in position to engage aheel on said shoe. The piston 26% is employedto move the head from saidintermediate position into a position wherein the holddown memberengages and clamps the heel on the shoe.

The piston 26d is'norrnally retained in an upper position by springs28%? opposite ends of which are secured.

to the lower portion of the support member 273 and to aflange ZdZsecuredto thepiston drive rod 262 and the fluid'pressure applied to the bottomthereof through a line 284- andcontrolledby a valve 2% (PEG. 17). Thehead 14- is thus normaliy retained in the upper position when themachine is inuse. When the carrier 28 is pivpiston 256 B normallyretained in anupper position byoted into.v operative position by theinitial depression of I the treadle 242, a contact member 28% (FIG. 4)secured to the carrier depresses a valve 2% mountedon the the spindle toestablish the proper location thereof; a

support member 234 thereby initiating the application of,

fluid pressure to the upper surface of the piston see through the line2%. The rate at which the piston 256 is depressed and returned isregulated by a speed control 1 valve 294. As stated above, depression ofthe piston 256 is translated through the piston rod a housing 272, androds 264 to the head which is lowered to the. intermediate positiondefined above. When the head is in the inter-.

ment of the holddown member with the heel of the shoe mounted on thelast and correct any deviations or release the treadle to return thehead and carrier in the. event rnediate position, the operator canexamine the aligndeviations exist which cannot'be corrected in theinter-q mediate position. a

The holddown member 139 on into engagement with the heel of a shoe byfurther depression of the treadle 242. When the treadleisfullydepressed, itcontacts a plunger on a holddown controlregulator 3%thereby initiating the application offluid pressure to the uppersurfaceof the piston 2626. Depression of the piston is translated tothecylinder 258 andth'ev connecting members appurtenant thereto throughthe the head 14 is'moved drive rodz2'62 threaded into acam 3b; which issecured; v to the lower portion of said cylinder and, ihllS,'IStlllLS indepression of the head 1 a When ditficulty is encountered in theapplication or" pressure to a heel, the operator can raise the head tothe intermediate position by releasing 1 the treadlefrom contact withthe plunger o-f-the regulator 3th}. Thepiston is returned to itsintermediate position by;the springs 23%. The maximum holddown pressureis controlled by the regulator 3134 ..When the holddown member: hasclamped theheel' on otal between a Work receiving position and anoperative the shoe mounted on the jack 22, pressure is built upwithinthe system illustrated in FIG 310 mounted in the support member 2'78. Aregulator 1 heel, a sequence valve 314 opens a drive-operating valve 316therebyreleasing the pressure fluid within theaccu-.

mulator into the cylinder Z'TZ to drive a piston 313;. The piston 318has afianged upper portionfi-ZQKFIGS. 4-, 5 and 7) overiapping theedgeot the cylinder 272 into controls the pressure within the]accumulator 32th. When thepressure has reaohedga -pr e-' determinedmagnitude required tofdrive, a naii into the 17 and, particularly;

placement of the-pistoni from the accumulator; the piston is determinedby the contaot of a shock absorbing member 324 secured to' thefiangedp'ortion 324? A} by" With the loaver'inner' surface 3250f anannular-"member Which'is threade intothesupport' member 234.

The outer peripheryct the annular member 326 has" gear teeth thereonwhich cooperate'with gear tecthtlocated on an adjustment rod 328*herebyffacilitating adjustment of the relative position of the; member326 and "regulation of the throw of the piston and,th'ere'fore, thedepth the nail is driven. A shut-off valve sea 'is mai ually operativeto prevent operation of the valve 315 and, therefore, the piston 313." Asafety device is provided to prevent the driving of a nail 'whena shoehas not been placed on the jacl; 22 comprising the cam 3% and a camop,er-. ated valve mounted on the frame 12 by a bracket 344. The valveis so positioned that the cam 3% will not actuate itv-unless the hood isdisplaced a'distance incompatible withthe presence of .a shoe on thejack, the hood'being brought into engagement ;,with the shoe bydepression of the rod 262 by the piston ass.- An inter- 1 Vlocksystemtnot shown), may be'provided to prevent the a depression oithe piston pressinn of the.

prior to the completededepressed its full traverse by the operator.

In the operation ofthe' machine, a shoe and aheel o be attached theretoare mounted on the jack 22 with the spindle 4-2 in "position in'the'last-passage', the mount- :5 being movable to facilitatepositioning' -of the last and The treadle'Z fi-Z is'then depressedslightlyfrom its normal? position to release the -valve 25fi' andeffectuate pivotal moven ientof the carrier 28. As the carrier ispivoted into position by the piston 23% the cam rods 133M141 214 areurged outwardly from the cam plate 144 to release the foot and thearmZZZ otthe bell crank lever 21d thereby releasing the spindle andlocliing the mountin position. When the-carrier 23 is inoperative'position, the valve 2% is depressed by the contact member 288and the piston 25d lowers the head into aninter-mediate .position inlocation'for the .hoiddown member to engage the heel. The operator nowfully depresses thetreadle'and the holddown' member engages the heel toclamp it on the shoe due to the depressionot the PlStOHQfiii andpressure is thereafter built up with the: accumulator andauto' maticallyapplied to drive thenail. Having thus describedmy invention, w

position, a lastsupporting spindle, and means forlocldng I the spindleagainstnovementwhen the jack-is inthe .Worlcrec'eiving position, thecombination of means operative by the pivotal movement of said jack'tofreesaid "spindle. v v

V 3. In .a heel attaching "machine comprising a jackf 1 pivotalbetwecn aWork-receivingpositionand an'operative position and a mount forsupporting .a l'ash means controlling movementof said mount topcrrnitmovement thereof when :the jack is'in the work-receivingposition,

' V :the combination of meansopera-tive'by the pivotal moveis threadedflThe plunger 3232 contacts the rod 7%? and drives the nail as a result ofthe. disment of saidjack to said mount.

Shy the'fiuid pressure applied" The throw or. displacement :of

piston'258 when the treadl e is initially hat-I claim. as I new. anddesire to secure by Letters Patent of the United I regulate said controlmeans to retain 1 i In heel attaching: machine comprising.,.ia jack" Qpivotal between a work receiving position andan operative position,means located on said jack for mounting a last bearing a shoe, saidmounting means comprising a mount and a spindle, means for retainingsaid spindle against movement and for'permitting movement of said mountwhen the jack is in the work receiving position, and a head movabletoward and away from said jack, the combination of means operative bythe pivotal move ment of said jack in co-operation with said head tofree said spindle and retain said mount.

5. In a heel attaching machine comprising a jack pivotal between a workreceiving position and an operative position, means located on said jackfor mounting a last bearing a shoe, said mounting means comprising amount and a spindle, and means for retaining said spindle againstmovement and for permitting movement of said mount when the jack is inthe work receiving position, the combination of cam means operative bythe pivotal movement of said jack to free said spindle and retain saidmount, said cam means comprising a plurality of cam rods co-operativewith retaining means located on said mount and said spindle.

6. In a heel attaching machine comprising a jack pivotal between a workreceiving position and an operative position, means mounted on said jackfor mounting a last bearing a shoe, said mounting means comprising amount and a spindle, means for retaining said spindle against movementand for permitting movement of said mount when the jack is in the workreceiving position, and a head movable toward and away from said jack,the combination of cam meansoperative by the pivotal movement of saidjack in co-operation with said head to free said spindle and retain saidmount, said cam means comprising a plurality of cam rods co-operativewith retaining means located on said mount and said spindle.

7. In a heel attaching machine comprising a jack pivotal between a workreceiving position and an operative position, means located on said jackfor mounting a last bearing a shoe, said mountingmeans comprising amount and a spindle, means for retaining said spindle against movementand for permitting movement of said mount when the jack is in the workreceiving position, a head movable toward and away from said jack, andholddown means mounted on said head engageable witha heel on the shoemounted on said jack, the combination of means operative by the pivotalmovement of said jack to free said spindle and retain said mount, andmeans responsive to the presence of said jack in operative position tomove said holddown means toward heel-engaging position.

8. In a heel attaching machine comprising a jack pivotal between a workreceiving position and an operative position, means located on said jackfor mounting a last bearing a shoe, said mounting means comprising amount and a spindle, means for retaining said spindle against movementand for permitting movement of said mount when the jack is in the workreceiving position, a head movable toward and away from said jack, andholddown means mounted on said head forengagement with avheel located onsaid shoe, the combination of means operative by the pivotal movement ofsaid jack to free said spindle and retain said mount, means responsiveto the presence of said jack in operative position to move said holddownmeans toward heel-engaging position, and

means for moving said holddown means into engagement with said heel toclamp said heel in position.

9. In a heel attaching machine comprising a jack pivotal between a workreceiving position and an operative position, means located on said jackfor mounting a last bearing a shoe, said mounting means comprising amount and a spindle, means for retaining said spindle against movementand for permitting movement of said mount when the jack is in the workreceiving position, and holddown means movable toward and away from saidjack, the combination of means operative by the pivotal movement of saidjack to free said spindle and retain said mount, means responsive to thepresence of said jack in operative position to move said holddown meanstoward heel-engaging position, means for moving said holddown means intoengagement with said heel to clamp the heel in poistion on the shoe, andmeans operative in response to the clamping of said heel to insertattaching means into said heel.

10. In a heel attaching machine comprising a jack pivotal between a workreceiving position and an operative position, means located on said jackfor mounting a last bearing a shoe, said mounting means comprising amount and a spindle, means for retaining said spindle against movementand for permitting movement of said mount when the jack is in the workreceiving position, a head movable toward and away from said jack, andholddown means mounted on said head for engagement with a heel on saidshoe, the combination of means operative by the pivotal movement of saidjack to free said spindle and retain said mount, means for moving saidholddown means into engagement with said heel to clamp the heel inposition, and means operative in response to the clamping of the heel toinsert attaching means into said heel.

11. In a heel attaching machine comprising a jack pivotal between a workreceiving position and an operative position, means located on said jackfor mounting a last bearing a shoe, said mounting means comprising amount and a spindle, means for retaining said spindle against movementand for permitting movement of said mount when the jack is in the workreceiving position, a head movable toward and away from said jack, andholddown means mounted on said head for engagement with a heel locatedon said shoe, the combination of means operative by the pivotal movementof said jack in cooperation with said head to free said spindle andretain said mount and means for moving said holddown means intoengagement with a heel on said shoe to clamp the heel in position.

12. In a heel attaching machine comprising a jack pivotal between a workreceiving position and an operative position, means located on said jackfor mounting a last bearing a shoe, said mounting means comprising amount and a spindle, means for retaining said spindle against movementand for permitting movement of said mount when the jack is in the workreceiving position, a head movable toward and away from said jack, andholddown means mounted on said head engageable with a heel on the shoemounted on said jack, the combination of means operative by the pivotalmovement of said jack in co-operation with said head to free saidspindle and retain said mount, and means responsive to the presence ofsaid jack in operative position to move said holddown meanstowardheel-engaging position. a

13. In a heel attaching machine comprising a jack pivotal between a workreceiving position and an operative position, means located on said jackfor mounting a last bearing a shoe, said mounting means comprising amount and a spindle, means for retaining said spindle against movementand for permitting movementrof said mount when the jack is in the workreceiving position, and holddown means movable toward and away from saidjack, the combination of cam means operative by the pivotal movement ofsaid jack to free said spindle and retain said mount, said cam meanscomprising a plurality of cam rods co-operative with retaining meanslocated on said mount and said spindle, and means for moving'saidholddown means into engagement with a heel on said shoe to clamp theheel in position.

'14. Ina heel attaching machine comprising a jack pivotal between a workreceiving position and an operative position, .means located on saidjack for mounting a last bearing a shoe, said mounting means comprisinga mount and a spindle, means for retaining said spindle against movementand for permitting movement of said mount when the jack is in the workreceiving position, and

H 3,167,781 H r r Holddown means movable toward and away from said heelto elainpthe heel inlposition onfth'e shoe, and means: jack, thecombination of cam means operative by the operative in response to theclamping ofsaid heel to in pivotal movement of said jack to free saidspindle. and s'ert attaching nieans into said heeLQ retain said mount,said cam means comprisinga plurality V v Refeiences,Qitedinthefilofthis'patent of (3?.111'10dS-COOPfiIElt1Vfi Wlth retaining means locatedon 5 7 said mount and said spindle, means responsive to theUNITED'STATES' A x presence of saidjacli in operative position to movesaid 2,332,024 Standish j- Oct. 19, 1943 hoiddown means towardheel-engaging position, means for 2,428,047 Standish* Sept. 30, 1947moving said holddown means into engagement with said 2,579,936Lancasteri Deg. '25, 1951

1. IN A WHEEL ATTACHING MACHINE COMPRISING A JACK PIVOTAL BETWEEN A WORKRECEIVING POSITION AND AN OPERATIVE POSITION, MEANS LOCATED ON SAID JACKFOR MOUNTING A LAST BEARING A SHOE, SAID MOUNTING MEANS COMPRISING AMOUNT AND A SPINDLE, AND MEANS FOR RETAINING SAID SPINDLE AGAINSTMOVEMENT AND FOR PERMITTING MOVEMENT OF SAID MOUNT WHEN THE JACK IS INTHE WORK RECEIVING POSITIONS, THE COMBINATION OF MEANS OPERATIVE BY THEPIVOTAL MOVEMENT OF SAID JACK TO FREE SAID SPINDLE AND RETAIN SAIDMOUNT.